October 2023 0 5 Report
4. Здійснити наступні перетворення:
a) Mg → Mg₂Si - SiH2 - SiO2 → K₂SiO3
б)C →СО2 → Na2CO3→CO₂
NaCl
B) P →Са3P2 →PH3→P2O5→K3 PO4
даю 20 баллов срочно​
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